Old Roman chant - Domine audivi auditum tuum.
Medieval Old Roman Chant (7th century AD). Title: "Tractus: Domine audivi auditum tuum" Service: Adoration of the Cross.

Cantigas de Santa Maria - A Virgen Madre de Nostro Sennor.
The Cantigas of Santa Maria are lay religious songs of the High Middle Ages, dedicated to Virgin Mary. They were found in the collection of cantigas of Alfonso X el Sabio (1221 - 1284) among others of more secular themes. They originate from the Iberian peninsula. ~ Title: A Virgen Madre de Nostro Sennor (Cantiga 41)

Cantigas de Santa Maria - Ben pod'a sennor sen par fazer oyr e falar.
The Cantigas of Santa Maria are lay religious songs of the High Middle Ages, dedicated to Virgin Mary. They were found in the collection of cantigas of Alfonso X el Sabio (1221 - 1284) among others of more secular themes. They originate from the Iberian peninsula. ~ Title: Ben pod'a sennor sen par fazer oyr e falar (Cantiga 101)

Cantigas de Santa Maria - Tantas en Santa Maria son mercees e bondades.
The Cantigas of Santa Maria are lay religious songs of the High Middle Ages, dedicated to Virgin Mary. They were found in the collection of cantigas of Alfonso X el Sabio (1221 - 1284) among others of more secular themes. They originate from the Iberian peninsula. ~ Title: Tantas en Santa Maria son mercees e bondades (Cantiga 173)

Codex Calixtinus - Kyrie.
Medieval chant from Codex Calixtinus. Title: "Kyrie" Service: Missa Sancti Iacobi

Old Roman chant - Dominus dixit ad me.
Medieval Old Roman Chant (6th century AD). Title: "Introitus: Dominus dixit ad me". Service: Mesonycticon (Midnight Mass).

Old Roman chant - Tecum Principium.
Medieval Old Roman Chant (6th century AD). Title: "Graduale: Tecum Principium". Service: Mesonycticon (Midnight Mass).

Byzantine chant - Εξέδυσάν με τα ιμάτιά μου.
Medieval Byzantine chant. Title: "Εξέδυσάν με τα ιμάτιά μου" (They undressed me from my clothes) Service: Good Friday Passion

Old Roman chant - Statuit ei Dominus.
Medieval Old Roman Chant. Title: "Introitus: Statuit ei Dominus". Service: Missa Sancti Marceli.

Gothic chant - École de Notre-Dame: Benedicta et Venerabilis.
Gothic chant of the early Organum Era. (School of Notre-Dame) Title: "Benedicta et Venerabilis" - Gradual for Two Voices Service: Mass for the Nativity of the Virgin. Composer: Leoninus ~ Note: The part heard in this clip is only the first half of the Mass. The half minute between 3:40 and 4:12 is a personal favourite in chanting music. ~ Benedicta et venerabilis es, Virgo Maria: quae sine tactu pudoris inventa es Mater salvatoris. Virgo Dei Genitrix, quem totus non capit orbis, in tua se clausit viscera factus homo.

Russian chant - На реках Вавилонских.
Russian chant for the Lenten period. Title: "На реках Вавилонских" (By the waters of Babylon).

Byzantine chant - Αναστάσεως Ημέρα.
Medieval Byzantine Paschal (Easter) chant. Title: "Αναστάσεως Ημέρα" (Day of the Resurrection ) Service: Divine Liturgy of Pascha (Easter Mass)

Byzantine chant - Μυστήριο ξένον.
Medieval Byzantine Nativity chant (Kathismata of Christmas). Title: "Μυστήριο ξένον" (Wondrous Mystery) Service: Matins of Nativity

Old Roman chant - In splendoribus sanctorum.
Medieval Old Roman Chant (6th century AD). Title: "Communion: In splendoribus sanctorum". Service: Mesonycticon (Midnight Mass). ~ In spendoribus sanctorum ex utero ante luciferum genui te. Gloria Patri et Filio et Spiritui Sancto. Sicut erat in principio et nunc et sember et in secula seculorum. Amen. In spendoribus sanctorum ex utero ante luciferum genui te.

Chant of the Templars - Salve Regina.
Medieval Chant of the Templars. Era of the Crusades. Title: "Antiphona: Salve Regina". This is part of the chant (first 10 minutes out of approximately 15). ~ Latin: Salve, Regina, mater misericordiae, vita, dulcedo et spes nostra, salve. Ad te clamamus, exules filii Hevae. Ad te suspiramus gementes et flentes in hac lacrimarum valle. Eia ergo, advocata nostra, illos tuos misericordes oculos ad nos converte. Et Jesum, benedictum fructum ventris tui, nobis post hoc exsilium ostende. O clemens, o pia, o dulcis Virgo Maria. Ora pro nobis, sancta Dei Genitrix. Ut digni efficiamur promissionibus Christi. ~ English: Hail, holy Queen, Mother of Mercy, our life, our sweetness and our hope. To thee do we cry, poor banished children of Eve; to thee do we send up our sighs, mourning and weeping in this valley of tears. Turn then, most gracious advocate, thine eyes of mercy toward us; and after this our exile, show unto us the blessed fruit of thy womb, Jesus.…More

Ambrosian chant - Ecce quam bonum et jocundum.
Medieval Ambrosian chant of the church of Mediolanum (Milan). Title: "Canticum: Ecce quam bonum et jocundum".

Byzantine chant - Χερουβικόν Γ' Ήχου.
Medieval Byzantine Chant of the Divine Liturgy. Title: "Χερουβικόν Γ' Ήχου" (Cherubic Hymn in 3rd Tone) Service: Divine Liturgy

Gothic chant - École de Notre-Dame: Benedicamus Domino.
Gothic chant of the early Organum Era. (School of Notre-Dame) Title: "Benedicamus Domino" for Two Voices Service: Mass for the Nativity of the Virgin. Composer: Leoninus ~ Notable is the richly eastern fragrance introduced by Master Lycourgos Angelopoulos.

Chant of Grottaferrata - Ταγόν ζητών.
Medieval Byzantine Chant from the Basilian Monastery of Grottaferrata. Title: "Ταγόν ζητών" (Seeking a leader) Kontakion for St Neilos of Grottaferrata ~ Posted in honour of the Feast of St Neilos the Younger, founder of the Grottaferrata Abbey, celebrated on September 26th, in East and West.

Gregorian chant - Deus, Deus meus.
Medieval Gregorian Chant. Title: "Deus, Deus meus" Service: Palm Sunday